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W. H, GATES. RUBBER COATED BELT.`

No. 60,713, Pmnteduan. 1', 1867.

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WILLIAM H. GATES, 0F LOIS.VILLE, KENTUCKY.

Letters Patent No. 60,713,0Zated January 1. 1867. Y

IMPROVED MAGHINB BELTING.

TO'ALL WHOM IT MAY CONQERN:

Be it known that I, WILLIAM H. GATES, of Louisville, in the county ofJeifersomand State of Kentucky, haveinvented anew and useful improvementin Machine Belting and I do hereby declare that Vthe following is afull,' clear, and .exact description thereof, which will enable othersskilled n the art to make and use the same, reference being hadto'theaccompanying drawings, forming a part of this speciiication, inwhich- Figure'l-'is a view of my rubber or elastic coated' belt, as madein the endless form, with a section of the coating a removed to show theconstruction. -Figure 2 is a section of a combination of round belts asan improved at belt, showing also the' external appearance of thecouplings, b. l

Similar letters of reference indicate like parts. l

The object of my invention is to furnish an improved round orangular'belt, non-elastic in its length, but having an elastic coating or exterior. As in ordinary belting, especiallyiof the round form, thatpart opposite the pulley is, in .operating, subjected to extraordi arystrain, while the part within is corrugated, the eiiectof this elasticcoating is to obviate these diculties. Heretofore, these objections'havebeen overcome partially through al slight elasticity Vby the formorinthe substance of the belt, Las in the twisted leather and endlesswoollen belts, but whatv has been gained by elasticity has always beenlost in friction on the machinery, consequent upon the increased tensionnecessary to make the belt efective. But as this elastic coatingApresents. a far moreadhesive surface to the pulleys, greater power'will-be attained-of this description, eyen aslack belt, whereby also theAfriction on'the machinery must of necessity be diminished. i Y This beltconsists of a base of cotton or linen cord, or other fabric, coated'with .vulcanized rubber or other elastic material. The cord may be madeafter the manner ofthe endless belts used on Davis and Kidderselectrical machines, cr'its ends may present loops, links, or otherforms for attachment or detachment'at pleasure. When thus prepared, in ard-like form, it should be coated with Hughess cement, and again, whennearly dry, withfa sheet 'of the rubberoompound as prepared forvulcanizing in the manufacture of soft rubber goods, including packingor the admixsnre of cotton or other fibre when desirable. This sheet ofprepared rubber should be cut into strips corresponding in length withthe belt, and of such a Width as when wrapped a few times round the cordwill constitute about one-third or one-half the diameter of thebelt. If'theco'rd is endless, the strips for coating should be placed around adruin whose .circumference correspondsto the length'of the cord and theends cemented on a bevel, thus making acontinuous band evenly started,on the edge ot'- which the cemented cord is now rolled. It isthenemovedand wrapped in soap-stone or in cloth, to preserve its form, andvuicaniaedf. By similar cementing process, if desired, elastic coatedbelts may be made on a flat base, with three or more various angles; ifthree, the base being one.; but the combinationof two or more roundbelts on the same pulleys 'with surfaces grooved to receive them, willdoubtless supersede other forms. The elastic coated belt may be coupledthrough a section of rubber tubing, thus making the connection'closeand. concealed.'

Whatl claim and desire to secure by Letters Patent, is`

t 1. A round belt composed of a non-elastic central cordcoated withvulcanized rubber or other elastic material, substantially as describedand 'for the purpose set forth.

' 2. I claim the combination of two or more twisted cords coated with orsurrounded .by acoating of vulcanized rubber or other elastic materialto form an improved driving belt for machinery. l

3. I claim the process of coating a cotton or other cord as the base ,of.a round belt with vulcanized rubber or other elastic material,substantiallyas described and for the purpose set'forth.

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Witnesses JoHnR. EPPLEY, W; H. H. Gauss.

